Contents of the SYS EPROMs from a
Whitechapel Computer Works MG-1 workstation. The two chips are identified as U291 (for even bytes) and U292 (for odd bytes) on the MG-1 mainboard's silkscreen labels. A handwritten sticker on top of U291 reads
EVEN 2.51
SYS
13/1 U291
and a handwritten sticker on top of U292 reads
ODD 2.51
SYS
13/1 U292
Actual data appears to occupy only 15,712 bytes. Strings in the ROM appear to be used to construct a simple text user interface.